Coke oven machinery door extractor shroud

ABSTRACT

A shroud that is movable into position with a door extractor forms a seal with the buckstays of a coke oven and provides a curtain of negative pressure around the perimeter of the door. A spillage box is extended to a position beneath the doorsill to catch the fallout of coke when the door is retracted.

Jan. 9, 1973 R. c. KINZLER ETAL ,7 9,

COKE OVEN MACHINERY DOOR EXTRACTOR SHROUD Filed June 24, 1971 5Sheets-Sheet 1 INVENTORS Mme/v0 c. ll/VZLER, WILL/AM a. EDGAR I JOHN 0.5057742510 5 Sheets-Sheet 4' R. C. KINZLER ET AL mm m mag N N 6 A M E U0 T W wa I 0 a 5 Mm m w A w. 0 R W J V 9? 5 Q n MN MW l f w mQ wwmmmwwwwww S mu WI MMM QHWMHHHHW 9% {N m COKE OVEN MACHINERY DOOREXTRAC'IOR SHROUD Filed June 24, 1971 Jan. 9, 1973 R. c. KINZLER ET AL3,709,794

COKE OVEN MACHINERY DOOR EXTRACTOR SHROUD Filed June 24, 1971 5Sheets-Sheet 5 IN VENTORS RAYMOND c. K/NZLER, WILLIAM 0. 50041? t Jaw/v0. SUSTARS/C United States Patent O 3,709,794 COKE OVEN MACHINERY DOOREXTRACTOR SHROUD Raymond C. Kinzler, Carnegie, William D. Edgar, AllisonPark, and John D. Sustarsic, McKees Rocks, Pa., assignors to KoppersCompany, Inc., Pittsburgh,

Filed June 24, 1971, Ser. No. 156,412 Int. Cl. C10b 25/14 US. Cl.202--248 10 Claims ABSTRACT OF THE DISCLOSURE A shroud that is movableinto position with a door extractor forms a seal with the buckstays of acoke oven and provides a curtain of negative pressure around theperimeter of the door. A spillage box is extended to a position beneaththe doorsill to catch the fallout of coke when the door is retracted.

BRIEF SUMMARY OF THE INVENTION To a door extractor machine, which isusually carried by a pusher machine, there is attached a door extractorshroud including two interconnected upright tubular conduits havingsmoke and fume entry holes in opposite facing sides. The conduits areprovided with ducts that are adaptable to cooperate with other fixedducts on the pusher machine; these other ducts leading to a gas scrubberof conventional design.

The two upright tubular conduits move in coordination with the doorextractor machine whereby, when the door extractor machine moves towarda door to be removed, the upright tubular conduits move into engagementwith the buckstays on either side of the door. When the door is removed,the gas scrubber is actuated and smoke and fumes evolving from thecoking chamber are collected in the upright conduits and carried throughthe ducts to the gas scrubber.

After pushing is completed, the door is replaced and the cycle repeatedat another chamber.

For a further understanding of the invention and for features andadvantages thereof reference may be made to the following descriptionand the drawing which illustrates a preferred embodiment of equipment inaccordance with the invention which is suitable for practicing themethod of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. 1 illustrates schematically a side elevational view of anembodiment of the invention;

FIG. 2 is a view along line IIII of FIG. 1;

FIG. 3 is a view along line IIIIII of FIG. 1;

PG. 4 is a view along line IV-IV of FIG. 1;

FIG. 5 is a schematic perspective view, simplified in scope, thatillustrates the operation of one feature of the invention; and

FIG. 6 is a schematic diagram of the fluid actuating mechanism of theapparatus of FIG. 5.

DETAIL DESCRIPTION In FIG. 1, a coke oven door extractor machine 11carries, in addition to a conventional door extractor head 13 (FIG. 5),a door extractor shroud 15.

The door extractor shroud 15 includes a main support frame 17; a smokesuction shroud portion 19; and a spillage box assembly 21.

The main supports frame 17 includes a transversely extending carriage 23which is fitted with upper 25 and lower 27 knife edge rails as shown inFIGS. 1 and 2. The upper "ice knife edge rail 25 coacts with a pair ofsuitably grooved wheels 29 and in like manner the lower knife edge rail27 coacts with a pair of suitably grooved wheels 31.

The upper 25 and lower 27 grooved wheels are mounted onto theconventional door extractor head 13, shown only schematically in phantomoutline in FIG. 1 in two positions A and B. In position A, the doorextractor head 13 is retracted, and in position B, the door extractorhead 33 is extended to its operative position.

The door extractor head 13 is secured to a piston rod 35 portion of acylinder-piston assembly 37 which is movable in the direction of thearrows C, D for the purpose of engaging, unlatching, removing, andthereafter replacing a coke oven door.

The carriage 23 is provided with a downwardly extend ing clevis 39 towhich is connected one end of a wire rope cable 4.1, the purpose ofwhich will be described more fully hereinafter.

The smoke suction shroud portion 19 includes a pair of vertical elongateparallel rectangular conduits 43, 45 which are connected at theirrespective upper ends by a transversely extending rectangular conduit47, arranged about as shown in FIG. 2. Each vertical conduit 43, 45 isprovided with a plurality of long oval holes 49 in opposed sides; fivesuch long oval holes being suggested (FIG. 1) in each vertical conduit.But, more or less holes 49 may be provided as desired.

Each vertical conduit 43, 45 is supported by the carriage 23 and isprovided with an angle brace 51 secured to brackets 53, 55 on theconduits 43, 45 and on the carriage 23 respectively.

Each vertical conduit 43, 45 is closed at its bottom in a suitablemanner, as by a plate 57, and at approximately the mid-height locationon each vertical conduit 43, 45, there is a branch conduit 59, 61 thatangles off about as shown in FIG. 3 and terminates in a downwardlyextending duct 63 having a rectangularly shaped enlarged cap 65. Thedownward side of the cap 65 on the side nearest the coke oven,represented in the drawings by a pair of buckstays 67, is not provided;there being downward sides 69 only on three edges of the cap 65 for apurpose that will be explained hereinafter.

Each cap 65 coacts with the upper end of a fixed conduit 71 which islocated, in relation to the movable door extractor shroud 15, aboutwhere shown in FIG. 2; the fixed conduits 71 being mounted suitable to aconventional pusher machine. The free end of the conduit 71 is connectedto a conventional gas scrubber 72 mounted at a convenient location onthe pusher machine.

The spillage box 21 includes an elongate fabricated weldment type beam73 which is connected at one end to a receptacle 75 while the other endof the elongate beam 73 carries a cable dead-end lug 77. The fabricatedweldment type beam 73 includes two facing channels 79 and a fiat plate81 welded to the webs of the channels about where shown in FIG. 2. Ofcourse, any other type of beam may be used if preferred.

The elongate beam 73 engages a plurality of rollers 83 journaled in asupport structure 85 that is secured to the pusher machine, and thesupport structure 85 also carries a sheave 87 over which a wire rope 89is looped.

The wire rope 89 is connected at one end to the cable dead-end lug 77and the other end is looped around and is fastened to a drum 91 that isjournaled on a shaft 93. As may be noted by reference to FIG. 5, theshaft 93 also carries another drum 95 onto which the wire rope cable 41is wound and to which it is fastened. The shaft 93 is journaled in aconventional manner to the pusher machine. The wire rope cable 89 passesaround a pair of idler sheaves 97, 99 that are suitably journaled to thepusher machine also.

The support structure 85 also carries a pair of outstanding arms 101that are mounted to channels 103 on the structure 85, and each arm 101carries a roller 105 at its free end.

The receptacle 75 is adapted to receive hot coke and has a pivotallymounted gate 107 that closes the bottom of the receptacle. Pieces of hotcoke that fall out of the oven when the door is removed, collect on andgravitate down an inclined chute 109 into the spillage box receptacle75. The chute 109 is disposed at a level below the bottom of thedoorsill and is connected suitably to the doorjambs.

A hopper 111 is mounted to the pusher machine, about where shown in FIG.1, and this hopper 111 receives coke from the spillage box 75 when it isretracted to the phantom outline position shown in FIG. 1 in the mannerdescribed hereinafter.

In operation, the coke oven machinery door extractor shroud 15 isinitially in the retracted position shown by the dotted phantom outlineof FIG. 1. The door extractor head 13 is also in the retracted position,A, shown in FIG. 1, and the spillage box 21 is also retracted.

Now, then, when it is desired to push coke from a coke oven chamber, thepusher machine and coke guide are brought into alignment in aconventional manner and the door extractor on the pusher machine side,as well as the door extractor on the coke side, are moved from theretracted position, A, toward the coke oven.

The door extractor shroud 15 also moves from right to left, as viewed inFIG. 1, and the vertical conduits 43, 45 are brought into contact withthe buckstays on both sides of the coke oven chamber, or close enough tothe buckstays so that flexible sealing strips 113, 115 on the verticalconduits engage the buckstays.

As the door extractor shroud moves into contact with the buckstays, thespillage box moves from its retracted position to its extended position.

After the door extractor shroud contacts the buckstays, the doorextractor head continues to move toward and into contact with the door,which is unlatched. The door latches 117 are shown schematically in FIG.2.

FIG. 6 illustrates schematically a fluid (air) flow and electricaldiagram for the operation of the door extraction hood 15. Fluid isconveyed in a conduit 119 from a convenient source of supply to a filterlubricator 121 and then through a pressure regulator 123 and check valve125 to a four-way solenoid valve 127.

From the solenoid-operated, four-way valve 127, the fluid (air) flowseither in conduit 129 or 131 into the cylinder portion of thecylinder-piston assembly 37. As shown in FIG. 6, the door extractor head13 is retracted. So, in order to advance the door extractor toward thedoor, fluid would flow from the cylinder in conduit 129 and bedischarged to atmosphere, if air is the fluid, or to a reservoir, ifhydraulic fluid is used, after passing through a pressure relief valve133. Fluid, of course, will flow in conduit 131 into cylinder 37.

After the door is unlatched, the gas scrubber system is activated andsmoke and fumes are drawn into the vertical conduit 43, 45 through theopenings 49, and the smoke and fumes flow in the fixed exhaust conduit71 in the direction of the arrow B.

The door extractor, carrying the door, retracts about two feet and stopsunder the influence of a limit stitch. Simultaneously, the doorextractor activates a timer.

As the door is retracted, it usually happens that a small quantity ofhot coke falls from the coke in the chamber. Tihs coke falls into thereceptacle 75 which is in position below the chute 109.

When the timer times out, it initiates the following sequence: the doorextractor retracts; the solenoid valve is deenergized, whereby the doorextractor shroud retracts; and the gas scrubber system stops.

When the door extractor retracts, it will be observed from FIG. 5, thespillage box retracts under the influence of the force of gravity to theretracted position.

As the spillage box receptacle approaches the retracted position, therollers engage the gate 107 and pivot it to the open position; the hotcoke in the receptacle gravitating into the coke hopper. The hopper,thereatfer, is emptied at one end of the coke battery and the water usedfor scrubbing the fumes and smoke and collected by the apparatus is usedagain to quench the hot coke in the hopper After the initial outpouringof smoke and fumes have subsided, the door extractor head is furtherretracted and the shroud is also retracted. .Then, the pusher machine ismoved along its track to align the pusher ram with the coke oven chamberfor pushing coke.

When pushing is completed, the pusher machine is again moved to alignthe door extractor with the chamber, and the shroud and door are movedtoward the battery. The door is replaced and the shroud and doorextractor head are retracted.

A cycle is now completed and the pusher machine is ready to be moved tothe next oven to be pushed.

Those skilled in the art will recognize, from the foregoing descriptionof one embodiment of the invention, many features and advantages, amongwhich these are most significant.

The apparatus is readily adaptable for installation on existing as wellas on new pusher machines;

The apparatus operates automatically once the door extractor is alignedwith an oven to be pushed; and

The apparatus is particularly effective and efficient in removing smokeand fumes from the environment of the open ends of a coke oven chamberwhen the doors are being removed. Heretofore, there has been noeffective apparatus for collecting and removing smoke and fumes fromthis environment.

Visual monitoring of the door extractor operation is not hampered in anyway and the machine operator can see at all times what is happening.

Although the invention has been described herein with a certain degreeof particularly it is understood that the present disclosure has beenmade only as an example and that the scope of the invention is definedby what is hereinafter claimed.

What is claimed is:

1. In a coke oven battery having doors at the ends of a coking chamberfrom which coke is to be pushed by means of a pusher machine carrying adoor extractor, the improvement comprising:

(a) first and second spaced apart vertical tubular conduits havingperforations therein;

(b) means maintaining said tubular conduits a fixed distance apart whichis substantially the distance between adjacent buckstays of said cokeoven battery;

(0) means mounting said vertical conduits to said door extractor formovement along with said extractor toward and away from said cokingchamber;

(d) a duct connected to each vertical conduit and having means forcommunicating with means for pulling smoke and fumes through saidperforations into said conduits;

(e) a pair of ducts fixed to said pusher machine and communicating withsaid conduits for carrying smoke and fumes collected in said verticalconduits away from the environment of said chamber to be pushed when adoor is removed; and

(f) means coordinating the movements of said door extractor and saidvertical conduits whereby, when said door extractor moves toward a door,said vertical conduits move into engagement with said buckstays and whensaid door extractor removes said door said smoke and fumes are collectedin said vertical tubular conduits.

2. The structure of claim 1 wherein:

(a) said means maintainin said conduits in spaced apart relationincludes a transversely extending other conduit.

3. The structure of claim 1 wherein:

(a) said means mounting said conduits to said door extractor includes acarriage having rails that coact with rollers journaled to saidextractor.

4. The structure of claim 1 including:

(a) sealing means disposed between said vertical conduits and saidbuckstays.

5. The structure of claim 4 including:

(a) a receptacle that is movable in coordination with said verticalconduits and said door extractor into position beneath said door wherebywhen said door is removed spillage coke gravitates into said receptacle;and

(b) means for advancing and retracting said receptacle toward and frombeneath said door when said door is extracted.

6. The structure of claim 4 including:

(a) fluid actuated cylinder-piston assembly that is connected to saiddoor extractor into engagement with said buckstays; and

(b) sealing means on said vertical tubular conduits disposed betweensaid conduits and said buckstays.

7. In a coke oven battery having doors at the ends of a coking chamberfrom which coke is to be pushed by means of a pusher machine carrying adoor extractor, the improvement comprising:

(a) first and second spaced apart vertical tubular conduits havingperforations therein;

(b) a transverse conduit connecting said vertical conduits andmaintaining them a distance apart that is substantially equal to thedistance between adjacent buckstays of said coke oven battery;

(c) a frame connected to said vertical conduits that is cooperative withmeans on said door extractor where by said frame is movable relative tosaid extractor;

(d) a cylinder-piston assembly mounted to both said door extractor andto said frame for moving said frame relative to said extractor and intoengagement with the buckstays on opposite sides of a chamber to bepushed;

(e) a duct connected to each vertical conduit having means adapted tocoact with conduit means supported by said pusher machine; and

(f) a gas scrubber mounted to said pusher machine that is connected toeach said conduit means on said pusher machine, which, when actuated,withdraws smoke and fumes from the environment around a door when it isremoved from said chamber to be pushed.

8. The structure of claim 7 including:

(a) a receptacle that is movable in coordination with said verticalconduits and said door extractor into position beneath said door wherebywhen said door is removed spillage coke gravitates into said receptacle;and

(b) means for advancing and retracting said receptacle toward and frombeneath said door when said door is extracted.

9. The structure of claim 7 including:

(a) fluid actuated cylinder piston assembly that is connected to saiddoor extractor into engagement with said buckstays; and

(b) sealing means on said vertical tubular conduits disposed betweensaid conduits and said buckstays.

10. The structure of claim 8 wherein:

(a) said means for advancing and retracting said receptacle includes:

(i) an elongate beam secured to said receptacle,

(ii) rollers coating with said elongate beam and journaled to saidpusher machine in such an arrangement that said receptacle isretractable under the force of gravity,

(iii) wire rope means secured to said elongate beam and to a firstrotatable drum that is fixed to a shaft to which a second drum issecured, and

(iv) wire rope means secured to said frame and to said second drum,whereby when said frame advances toward said chamber to be pushed, saidelongate beam and the receptacle also advance toward said chamber, andwhereby when said frame is retracted said elongate beam and receptaclegravitate away from said chamber.

References Cited UNITED STATES PATENTS 3,275,360 9/1966 Tucker 202-248 X2,800,435 7/1957 Homan 202-448 2,972,422 2/1961 Stone 212-4 2,746,611 5/1956 Hennseleit 2 l2-4 NORMAN YUDKOFF, Primary Examiner D. EDWARDS,Assistant Examiner US. Cl. X.R. 202263: 2l24

